CN202034769U

CN202034769U - Plastic shell leakage controller for three-phase power supply

Info

Publication number: CN202034769U
Application number: CN2011200898863U
Authority: CN
Inventors: 周坤
Original assignee: SUZHOU INDUSTRIAL PARK FEIER INTELLIGENT ELECTRICAL APPARATUS Co Ltd
Current assignee: Jiangsu Feal Electrical Appliances Co., Ltd.
Priority date: 2011-03-30
Filing date: 2011-03-30
Publication date: 2011-11-09
Anticipated expiration: 2021-03-30

Abstract

The utility model relates to a plastic shell leakage controller for three-phase power supply, which comprises a controller, a mutual inductor, an actuating mechanism and a circuit breaker. A three-phase power end of the controller is connected with a wire outlet end of the circuit breaker, an input end of the controller is connected with an output end of the mutual inductor, and an output end of the controller is connected with an input end of the actuating mechanism. The controller comprises a three-phase power processor, a coil, a leakage detecting processing chip and a silicon controlled thyristor. The three-phase power processor is connected with the coil and the leakage detecting processing chip through leads, the silicon controlled thyristor is arranged between the leakage detecting processing chip and the coil, and the leakage detecting processing chip is connected with the mutual inductor through a lead. The plastic shell leakage controller for three-phase power supply is capable of shutting off a power supply automatically and timely so as to guarantee safety of people, equipment, circuits and the like, and is suitable for popularization.

Description

The shell leakaging controller is moulded in the three phase mains power supply

Technical field

The utility model relates to moulds the shell leakaging controller, and what relate in particular to that three phase mains powers simultaneously moulds the shell leakaging controller.

Background technology

With Mitsubishi Electric Co., ABB AB and CM1 series is representative; be the electronic type residual current circuit breaker; but electronic unit mainly is to adopt the single phase poaer supply power supply on the market; widely used total grade of earth leakage protective chip M54123L, M54133FP; also exist some electronics producers for reducing cost simultaneously; adopt the electronic component of discrete, and do not have anti-interference circuit and protection circuit, this makes reliability of products, life-span and interference free performance extreme difference.

Because controller is a single phase power supply; and be used for the residual current circuit breaker of the normally 3P/3P+N/4P of route protection; this certainly exists a problem: if be used for a certain phase power supply of controller power taking because former thereby outage such as insecure or circuit damage is installed; then controller can't be worked; just can not protect the electric leakage that influences safety of life and property; the controller of single-phase power taking simultaneously can not carry out anti-interference protection to three phase mains simultaneously; cause load end may be subjected to interference such as lightning surge or other radiation, thereby influence the life property safety.

Therefore, the utility model is considered existing controller some limitation in above-mentioned application, moulds the shell leakaging controller and develop the three phase mains power supply.

Summary of the invention

The purpose of this utility model is exactly at the deficiencies in the prior art, provides the three phase mains power supply to mould the shell leakaging controller, if any one outage mutually, the utility model still can operate as normal.

For achieving the above object, concrete scheme of the present utility model is:

The shell leakaging controller is moulded in the three phase mains power supply, comprise controller, instrument transformer (ZCT), actuator and circuit breaker, described controller three-phase power taking end links to each other with the circuit breaker leading-out terminal, described controller input links to each other with instrument transformer (ZCT) output, and described controller output end links to each other with the actuator input.

Described controller comprises three phase mains processor, line bag (T.COIL), detection of electrical leakage process chip, controllable silicon (SCR), described three phase mains processor links to each other by lead with line bag (T.COIL), described three phase mains processor links to each other by lead with the detection of electrical leakage process chip, be provided with controllable silicon (SCR) between described detection of electrical leakage process chip and the line bag (T.COIL), described detection of electrical leakage process chip is connected by lead with instrument transformer (ZCT).

In the utility model, the current class of described controller is 100A, 250A and 400A.

In the utility model, described actuator is provided with knob, and described knob is used to regulate dropout leakage current and delay time, and described leakage current is set to 0.03A～10A, and described delay time is set to 0.06～1s.

In the utility model, described controller is a kind of among controller M54123 or the controller M54133.

The beneficial effects of the utility model: when having any one in the three phase mains mutually in outage or the electrical network when various interference is arranged; still can play a protective role; promptly when human electric shock's electric current or All other routes surpass permissible value to earth fault; the utility model can be cut off the electricity supply to ensure safety such as the person, equipment and circuit automatically timely, the utlity model has popularizing action.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the structural representation of the utility model middle controller.

Embodiment

Further understand and understanding for making architectural feature of the present utility model and the effect reached had, cooperate detailed explanation, be described as follows in order to preferred embodiment and accompanying drawing:

Three phase mains power supply described in the utility model is moulded the shell leakaging controller and is comprised controller 1, instrument transformer (ZCT) 2, actuator 3 and circuit breaker, described controller 1 three-phase power taking end links to each other with the circuit breaker leading-out terminal, described controller 1 input links to each other with instrument transformer (ZCT) 2 outputs, and described controller 1 output links to each other with actuator 3 inputs.

Wherein, the current class of described controller 1 is 400A, 250A and 100A.

Wherein, described actuator 3 is provided with knob, and described knob is used to regulate dropout leakage current and delay time, and described leakage current is set to 0.03A～10A, and described delay time is set to 0.06～1s.

Wherein, described controller 1 is a kind of among controller M54123 or the controller M54133.

Described controller 1 comprises three phase mains processor 4, line bag (T.COIL) 5, detection of electrical leakage process chip 6, controllable silicon (SCR) 7, described three phase mains processor 4 and line bag (T.COIL) 5 link to each other by lead, described three phase mains processor 4 and detection of electrical leakage process chip 6 link to each other by lead, be provided with controllable silicon (SCR) 7 between described detection of electrical leakage process chip 6 and the line bag (T.COIL) 5, described detection of electrical leakage process chip 6 and instrument transformer (ZCT) 2 are connected by lead.

The loop power supply of constituting 1. for detection of electrical leakage process chip 6, line bag (T.COIL) 5 and controllable silicon (SCR) 7 is guaranteed the reliable, stable of power supply; 2. adopt special-purpose detection of electrical leakage process chip 6 sampling processing zero sequences electric leakage instrument transformer (ZCT) 2 detected electric leakage signals; 3. final outputs level signals triggers controllable silicon (SCR) 7 conductings, and line bag (T.COIL) 5 gets electric, actuator's 3 actions, circuit breaker disjunction.

When electric leakage signal, the electric leakage signal of 2 levels of instrument transformer (ZCT) output after pressure limiting, conversion as the input signal of controller 1, before the electric leakage signal through amplifying reached setting, the output of latch circuit kept low level always, and earth leakage protective device is failure to actuate; When leakage current during greater than setting; delay circuit is started working; at this moment if electric leakage signal disappears in less than the delay time of setting; then do not export triggering signal; controllable silicon (SCR) 7 not conductings; earth leakage protective device is failure to actuate; after delay circuit is started working; if electric leakage signal continues to exist, then export triggering signal, controllable silicon (SCT) 7 conductings in the delay time of setting (being actually than the long 20ms of delay time that sets); actuator's 3 tripping coils get; the earth leakage protective device action is cut off AC power, thereby grid power leakage is played a protective role.

In sum, it only is preferred embodiment of the present utility model, be not to be used for limiting the scope that the utility model is implemented, all equalizations of doing according to the described shape of the utility model claim scope, structure, feature and spirit change and modify, and all should be included in the claim scope of the present utility model.

Claims

1. the shell leakaging controller is moulded in the three phase mains power supply, comprise controller, instrument transformer, actuator and circuit breaker, it is characterized in that: described controller three-phase power taking end links to each other with the circuit breaker leading-out terminal, described controller input links to each other with the instrument transformer output, and described controller output end links to each other with the actuator input;

Described controller comprises three phase mains processor, line bag, detection of electrical leakage process chip, controllable silicon, described three phase mains processor links to each other by lead with the line bag, described three phase mains processor links to each other by lead with the detection of electrical leakage process chip, be provided with controllable silicon between described detection of electrical leakage process chip and the line bag, described detection of electrical leakage process chip is connected by lead with instrument transformer.

2. the shell leakaging controller is moulded in three phase mains power supply according to claim 1, and it is characterized in that: the current class of described controller is 100A, 250A and 400A.

3. the shell leakaging controller is moulded in three phase mains power supply according to claim 1, and it is characterized in that: described actuator is provided with knob.

4. the shell leakaging controller is moulded in three phase mains according to claim 1 power supply, it is characterized in that: described controller is a kind of among controller M54123 or the controller M54133.